<div>
Here the RegExp version:<br />
<br />
&lt;script&gt;<br />
<br />
myText = &quot;Sum(ItemOne + ItemTwo + ItemThree)\nCalcLate( something0&quot;;<br />
<br />
alert(myText.replace(/\w+\<wbr />s*\(/g,fun<wbr />ction(p){r<wbr />eturn p.toLowerCase()}));<br />
<br />
&lt;/script&gt;<br />
<br />

</div>


Here the RegExp version:

<script>

myText = "Sum(ItemOne + ItemTwo + ItemThree)\nCalcLate( something0";

alert(myText.replace(/\w+\s*\(/g,function(p){return p.toLowerCase()}));

</script>



<div>
Why is this question still open? Do you need more help or some explanations?
</div>


Why is this question still open? Do you need more help or some explanations?

<div>
<div class="content wysiwyg-content">
Given <br />
Sum(ItemOne + ItemTwo + ItemThree)<br />
CalcLate( something0<br />
<br />
I need to have javascript that would look at all of the characters before the ( and replace them with toLower().<br />
<br />
I'd like to do this with the replace (regex, replacement) but can't seem to get the regex to work.<br />
<br />

</div>
</div>


Given 
Sum(ItemOne + ItemTwo + ItemThree)
CalcLate( something0

I need to have javascript that would look at all of the characters before the ( and replace them with toLower().

I'd like to do this with the replace (regex, replacement) but can't seem to get the regex to work.



RegEx replace upper case

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.